Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add klovaaxel/web-a11y-agent-skills --skill web-a11y-testinggit clone --depth 1 https://github.com/klovaaxel/web-a11y-agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/klovaaxel/web-a11y-agent-skills/web-a11y-testing)<a href="https://agentmods.dev/skills/klovaaxel/web-a11y-agent-skills/web-a11y-testing"><img src="https://agentmods.dev/badge/skills/klovaaxel/web-a11y-agent-skills/web-a11y-testing/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/klovaaxel/web-a11y-agent-skills/web-a11y-testing"><img src="https://agentmods.dev/badge/skills/klovaaxel/web-a11y-agent-skills/web-a11y-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00041 | $0.00306 |
| Opus 5.5 | $0.00016 | $0.00122 |
| Sonnet 5.5 | $0.00008 | $0.00061 |
| Haiku 4.5 | $0.00004 | $0.00031 |
Grade A, and why
web-a11y-testing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Web A11y Testing
Test Order
For repeatable smoke-check steps, see CHECKS.md.
- Automated scan for changed surfaces.
- Keyboard-only journey.
- Screen reader smoke pass.
- Zoom, reflow, reduced motion, and forced-colors checks where relevant.
Checklist
Testing checklist
- [ ] Automation run completed and findings triaged
- [ ] All controls reachable and operable by keyboard
- [ ] Focus order and focus visibility are logical
- [ ] Names, roles, states, and values are announced correctly
- [ ] Dynamic changes are announced or focus-managed
- [ ] Forms expose errors, hints, and recovery paths
- [ ] Images, SVG, media controls, captions/transcripts, and unusual link behavior are verified where present
- [ ] User preference modes remain usable
Screen Reader Smoke Path
- Check page title, landmarks, and heading map.
- Navigate to critical controls and verify role/name/state.
- Trigger state changes, dialogs, filters, validation, and pagination.
- Confirm no stale or duplicate announcements block task completion.
Report
Include scope, tools used, pass/fail results, reproduction steps for failures, and residual risk.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 42 lines · 41 tokens per session scan A 13332ac3aa8f
web-a11y-testing is a skill published in the GitHub repository klovaaxel/web-a11y-agent-skills (5 stars, last pushed 6mo ago), licensed MIT. It adds 41 tokens to every session and 306 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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